8 - 7th cleric: 4th lvl spell
9 - 8th cleric: feat (+2 WIS), potent spellcasting (+WIS damage with cantrips)
10 - 9th cleric: +1 prof. bonus, 5th lvl spell
11 - 10th cleric: divine intervention, cantrip (xxx)
12 - 11th cleric: 6th lvl spell
13 - 12th cleric: feat (+2 WIS)
14 - 13th cleric: +1 prof. bonus, 7th lvl spell
15 - 14th cleric:
16 - 15th cleric: 8th lvl spell
17 - 16th cleric: feat (+2 CON)
18 - 17th cleric: +1 prof. bonus, 9th lvl spell, arcane mastery (domain spells f/wizard: 6th, 7th, 8th, Wish)
19 - 18th cleric:
20 - 19th cleric: feat (+2 CON)